CN114383305B - Air conditioner, dehumidification control method thereof and computer readable storage medium - Google Patents
Air conditioner, dehumidification control method thereof and computer readable storage medium Download PDFInfo
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- CN114383305B CN114383305B CN202011122086.7A CN202011122086A CN114383305B CN 114383305 B CN114383305 B CN 114383305B CN 202011122086 A CN202011122086 A CN 202011122086A CN 114383305 B CN114383305 B CN 114383305B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a dehumidification control method of an air conditioner, which comprises the following steps: acquiring the current indoor temperature after the air conditioner operates in a dehumidification mode, wherein when the air conditioner operates in the dehumidification mode, an indoor fan of the air conditioner rotates forward to supply air to the indoor; and when the current indoor temperature is smaller than the set temperature, controlling the indoor fan to reversely rotate. The invention also provides an air conditioner and a computer readable storage medium. The invention avoids blowing cold air out when the air conditioner dehumidifies, and ensures the comfort level of users.
Description
Technical Field
The present invention relates to the field of air conditioners, and more particularly, to an air conditioner, a dehumidification control method thereof, and a computer-readable storage medium.
Background
In the rainy season or when the air humidity is high, the user has a need for dehumidification. The user can dehumidify by the air conditioner.
When the air conditioner dehumidifies, the indoor air needs to be cooled and dehumidified through the indoor heat exchanger. This may cause the air conditioner to blow out cool air, which may reduce the room temperature, and blow out to the person, which may cause discomfort, and the general air conditioner may dehumidify, which may reduce the comfort of the user.
Disclosure of Invention
The invention mainly aims to provide a dehumidifying air conditioner, a dehumidifying control method thereof and a computer readable storage medium, and aims to solve the problem that comfort of a user is reduced when the air conditioner dehumidifies.
In order to achieve the above object, the present invention provides a dehumidification control method of an air conditioner, the dehumidification control method of the air conditioner comprising the steps of:
acquiring the current indoor temperature after the air conditioner operates in a dehumidification mode, wherein when the air conditioner operates in the dehumidification mode, an indoor fan of the air conditioner rotates forward to supply air to the indoor;
and when the current indoor temperature is smaller than the set temperature, controlling the indoor fan to reversely rotate.
In an embodiment, after the step of controlling the indoor fan to rotate reversely, the method further includes:
acquiring the coil temperature of an indoor heat exchanger;
and adjusting the running frequency of the compressor and/or the opening of the electronic expansion valve according to the coil temperature of the indoor heat exchanger.
In an embodiment, the step of adjusting the operating frequency of the compressor and/or adjusting the opening degree of the electronic expansion valve according to the coil temperature of the indoor heat exchanger includes:
determining whether the coil temperature is in a target range, wherein a limit value of the target range is a first preset temperature and a target difference value, the target difference value is larger than the first preset temperature, and the target difference value is a difference value between the current indoor temperature and a preset value;
upon determining that the coil temperature is within a target range, the operating frequency of the compressor is decreased and/or the electronic expansion valve is increased.
In one embodiment, after the step of obtaining a determination of whether the coil temperature is within a target range, further comprising:
when the temperature of the coil is smaller than a first preset temperature, the compressor is controlled to stop running, the indoor fan is controlled to rotate positively, and the angle of the air deflector is adjusted to enable the air conditioner to supply air upwards.
In an embodiment, after the step of adjusting the angle of the air deflector to make the air conditioner supply air upwards, the method further includes:
and when the temperature of the coil pipe is higher than a second preset temperature, controlling the angle of the air deflector to be restored to a set angle, and controlling the compressor to run, wherein the second preset temperature is higher than or equal to the target difference value.
In one embodiment, after the air conditioner operates in the dehumidification mode, the step of obtaining the current indoor temperature includes:
after the air conditioner enters a dehumidification mode, the electric auxiliary heating device is started;
the current indoor temperature is obtained.
In one embodiment, the step of reducing the operating frequency of the compressor includes:
and controlling the compressor to run according to the minimum running frequency, wherein the indoor fan reverses according to the maximum rotating speed.
In an embodiment, the air conditioner is provided with an electric auxiliary heating device, and after the step of controlling the indoor fan to reverse when the current indoor temperature is less than the set temperature, the air conditioner further includes:
and controlling the electric auxiliary heating device to operate.
In order to achieve the above object, the present invention also provides an air conditioner, which further includes a memory, a processor, and a control program stored in the memory and executable on the processor, the control program implementing the respective steps of the dehumidification control method of the air conditioner as described above when executed by the processor.
In order to achieve the above object, the present invention also provides a computer-readable storage medium storing a control program which, when executed by a processor, implements the respective steps of the dehumidification control method of an air conditioner as described above.
According to the air conditioner, the dehumidification control method and the computer readable storage medium thereof, after the air conditioner runs in a dehumidification mode, the current indoor temperature is obtained, and if the indoor temperature is smaller than the set temperature, the indoor fan is controlled to reversely rotate so as to prevent the air conditioner from supplying air indoors. Because the air conditioner is when dehumidifying, if indoor temperature is less than the settlement temperature, can confirm that the user can feel cold at present, and then make the air conditioner that the user felt send out be cold wind, the air conditioner is controlled indoor fan again and is switched from the corotation to the corotation in order to avoid the air conditioner to indoor air supply to avoid blowing out cold wind when the air conditioner dehumidifies, guaranteed user's comfort level.
Drawings
Fig. 1 is a schematic diagram of a hardware architecture of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a flow chart of a first embodiment of a dehumidification control method of an air conditioner according to the present invention;
FIG. 3 is a flow chart of a second embodiment of a dehumidification control method of an air conditioner according to the present invention;
FIG. 4 is a flow chart of a third embodiment of a dehumidification control method of an air conditioner according to the present invention;
fig. 5 is a flowchart illustrating a fourth embodiment of a dehumidification control method of an air conditioner according to the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The main solutions of the embodiments of the present invention are: acquiring the current indoor temperature after the air conditioner operates in a dehumidification mode, wherein when the air conditioner operates in the dehumidification mode, an indoor fan of the air conditioner rotates forward to supply air to the indoor; and when the current indoor temperature is smaller than the set temperature, controlling the indoor fan to reversely rotate.
Because the air conditioner is when dehumidifying, if indoor temperature is less than the settlement temperature, can confirm that the user can feel cold at present, and then make the air conditioner that the user felt send out be cold wind, the air conditioner is controlled indoor fan again and is switched from the corotation to the corotation in order to avoid the air conditioner to indoor air supply to avoid blowing out cold wind when the air conditioner dehumidifies, guaranteed user's comfort level.
As shown in fig. 1, fig. 1 is a schematic diagram of a hardware architecture of an air conditioner according to an embodiment of the present invention.
The terminal related to the embodiment of the invention can be an air conditioner, and the air conditioner comprises: a processor 101, such as a CPU, a memory 102, and a communication bus 103. Wherein the communication bus 103 is used to enable connected communication among the components.
The memory 102 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. As shown in fig. 1, a control program may be included in the memory 103 as one type of computer storage medium; and the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
acquiring the current indoor temperature after the air conditioner operates in a dehumidification mode, wherein when the air conditioner operates in the dehumidification mode, an indoor fan of the air conditioner rotates forward to supply air to the indoor;
and when the current indoor temperature is smaller than the set temperature, controlling the indoor fan to reversely rotate.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
acquiring the coil temperature of an indoor heat exchanger;
and adjusting the running frequency of the compressor and/or the opening of the electronic expansion valve according to the coil temperature of the indoor heat exchanger.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
determining whether the coil temperature is in a target range, wherein a limit value of the target range is a first preset temperature and a target difference value, the target difference value is larger than the first preset temperature, and the target difference value is a difference value between the current indoor temperature and a preset value;
upon determining that the coil temperature is within a target range, the operating frequency of the compressor is decreased and/or the electronic expansion valve is increased.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
when the temperature of the coil is smaller than a first preset temperature, the compressor is controlled to stop running, the indoor fan is controlled to rotate positively, and the angle of the air deflector is adjusted to enable the air conditioner to supply air upwards.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
and when the temperature of the coil pipe is higher than a second preset temperature, controlling the angle of the air deflector to be restored to a set angle, and controlling the compressor to run, wherein the second preset temperature is higher than or equal to the target difference value.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
after the air conditioner enters a dehumidification mode, the electric auxiliary heating device is started;
the current indoor temperature is obtained.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
and controlling the compressor to run according to the minimum running frequency, wherein the indoor fan reverses according to the maximum rotating speed.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
and controlling the electric auxiliary heating device to operate.
According to the scheme, after the air conditioner runs in the dehumidification mode, the current indoor temperature is obtained, and if the indoor temperature is smaller than the set temperature, the indoor fan is controlled to rotate reversely so as to prevent the air conditioner from blowing air indoors. Because the air conditioner is when dehumidifying, if indoor temperature is less than the settlement temperature, can confirm that the user can feel cold at present, and then make the air conditioner that the user felt send out be cold wind, the air conditioner is controlled indoor fan again and is switched from the corotation to the corotation in order to avoid the air conditioner to indoor air supply to avoid blowing out cold wind when the air conditioner dehumidifies, guaranteed user's comfort level.
Based on the hardware architecture of the air conditioner, the embodiment of the dehumidification control method of the air conditioner is provided.
Referring to fig. 2, fig. 2 is a first embodiment of a dehumidification control method of an air conditioner according to the present invention, the dehumidification control method of an air conditioner includes the steps of:
step S10, after an air conditioner operates in a dehumidification mode, acquiring the current indoor temperature, wherein when the air conditioner operates in the dehumidification mode, an indoor fan of the air conditioner rotates forward to supply air to an indoor;
in this embodiment, the indoor fan is turning to indoor air supply when the air conditioner is operating in the dehumidification mode. When the air conditioner operates in the dehumidification mode, a user can set the temperature of the air conditioner through the remote controller, and the temperature is the set temperature. The set temperature may be regarded as the lowest temperature acceptable to the user when the air conditioner dehumidifies. Of course, the set temperature may be the dehumidified minimum temperature set by default for the air conditioner.
The air conditioner is provided with a communication module, is connected with a home network through the communication module, is connected with the Internet through the home network, and acquires weather information of the position of the air conditioner from the Internet. The weather information comprises outdoor humidity, and if the outdoor humidity is greater than the preset humidity, the air conditioner can output prompt information of whether dehumidification is performed or not. The user can send an instruction for entering the dehumidification mode to the air conditioner based on the prompt information, and the air conditioner can operate the dehumidification mode. In addition, the air conditioner can be provided with a humidity sensor, the indoor humidity is detected through the humidity sensor, and if the indoor humidity is larger than the preset humidity, the air conditioner can output prompt information.
When the air conditioner is in the operation dehumidification mode, the air conditioner can be operated with set operation parameters, and the air outlet temperature is higher as much as possible. The set operation parameters comprise the set operation frequency of the compressor, the set rotating speed of the indoor fan, the set rotating speed of the outdoor fan, the set opening degree of the electronic expansion valve and the like. The set operating frequency is related to the environment and the power of the heating element of the air conditioner, and is generally 10 Hz-40 Hz. The set rotation speed of the indoor fan and the outdoor fan is generally 600 rpm-1200 rpm. The opening degree is set to be the intermediate value of the opening degree range of the electronic expansion valve, for example, the opening degree of the electronic expansion valve is set to be 0 to 450, and the opening degree is set to be 200 to 250.
After the dehumidification mode is operated, the air conditioner detects the current indoor temperature through the set temperature sensor, and judges whether the current indoor temperature is smaller than the set temperature or not.
And step S20, controlling the indoor fan to reversely rotate when the current indoor temperature is smaller than the set temperature.
The set temperature may be set according to an initial indoor temperature before dehumidification is not performed, and the set temperature may be less than the initial indoor temperature. Therefore, when the current indoor temperature is determined to be smaller than the set temperature, the air blown out by the air conditioner can be determined to enable the indoor temperature to be reduced, so that the indoor temperature is lower than the set temperature, and the cold air blown out by the air conditioner can be determined.
The set temperature may be set by the user according to the temperature sensed by the user to be cold, that is, the set temperature may be the lowest air outlet temperature blown out by the user when the user receives the dehumidification of the air conditioner. The user sets the temperature, relying on experience, and the temperature that may be set is not accurate. In this regard, the set temperature may be recommended by the outdoor temperature detected by the air conditioner for selection by the user. For example, when the outdoor temperature is high, the minimum dehumidification temperature that the user can accept is high, for example, if the outdoor temperature is 35 ℃, the set temperature can be 27 ℃. If the current indoor temperature is smaller than the set temperature, the air blown out by the air conditioner can be regarded as cold air.
When the air blown out by the air conditioner is determined to be cold air, the air conditioner controls the indoor fan to rotate reversely. As the indoor fan rotates forward, the air conditioner supplies air to the indoor through the air outlet. When the indoor fan is reversed, the air conditioner sucks in indoor air through the air outlet. It can be understood that when the air conditioner dehumidifies and the indoor fan rotates forward, the air conditioner sucks in indoor air through the return air inlet, and the indoor air is condensed by the indoor heat exchanger and then is output from the air outlet. When the air conditioner dehumidifies and the indoor fan rotates reversely, the air conditioner sucks in indoor air through the air outlet, and the indoor air is condensed through the indoor heat exchanger and then is output from the air return port. Because the air return port is not just set for the user, the air output by the air conditioner is not blown to the user, and the user can not feel the cold air blown out by the air conditioner.
In the technical scheme provided by the embodiment, after the air conditioner runs in the dehumidification mode, the current indoor temperature is obtained, and if the indoor temperature is smaller than the set temperature, the indoor fan is controlled to rotate reversely so as to prevent the air conditioner from blowing air indoors. Because the air conditioner is when dehumidifying, if indoor temperature is less than the settlement temperature, can confirm that the user can feel cold at present, and then make the air conditioner that the user felt send out be cold wind, the air conditioner is controlled indoor fan again and is switched from the corotation to the corotation in order to avoid the air conditioner to indoor air supply to avoid blowing out cold wind when the air conditioner dehumidifies, guaranteed user's comfort level.
Referring to fig. 3, fig. 3 is a second embodiment of the dehumidification control method of an air conditioner according to the present disclosure, based on the first embodiment, the step of step S20 further includes:
s30, acquiring the coil temperature of the indoor heat exchanger;
and step S40, adjusting the operation frequency of the compressor and/or adjusting the opening of the electronic expansion valve according to the coil temperature of the indoor heat exchanger.
In this embodiment, the air conditioner determines that the air blown out by the air conditioner can cause the user to feel cold, and after the air conditioner controls the indoor fan to rotate reversely, the temperature of the coil pipe of the indoor heat exchanger can be obtained, so that at least one of the operation frequency of the compressor and the opening of the electronic expansion valve is adjusted according to the temperature of the coil pipe, and the air outlet temperature of the air conditioner is improved.
Specifically, when the coil temperature is a proper value, the air outlet temperature is higher, the dehumidification amount is larger, the running frequency of the compressor can be reduced, the coil temperature of the indoor heat exchanger is increased, and the air outlet temperature of the air conditioner is increased. The air conditioner can also increase the opening degree of the electronic expansion valve and the coil temperature of the indoor heat exchanger. Of course, the air conditioner may decrease the operating frequency of the compressor and increase the opening degree of the electronic expansion valve. The reduction value of the operation frequency of the compressor and the increased opening of the electronic expansion valve can be fixed values, namely, the air conditioner carries out fine adjustment on the temperature of the coil pipe of the indoor heat exchanger, and the dehumidification amount of the air conditioner is prevented from being too small.
Of course, the operating frequency of the compressor and the adjustment range of the opening degree of the electronic expansion valve can be determined based on the coil temperature of the indoor heat exchanger. Specifically, when the coil temperature of the indoor heat exchanger is low, the reduction amplitude of the operating frequency of the compressor is large, and the increase amplitude of the opening of the electronic expansion valve is large. The air conditioner can store the mapping relation among the coil temperature of the indoor heat exchanger, the reduction value of the operating frequency of the compressor and the opening degree increase value of the electronic expansion valve, and the air conditioner can determine the reduction value of the operating frequency of the compressor and the opening degree increase value of the electronic expansion valve according to the current coil temperature and the mapping relation.
It should be noted that if the difference between the indoor temperature and the set temperature is greater than the preset threshold, the cooling effect of the wind (the wind sent out by the air conditioner) is more obvious, that is, the temperature of the coil is small, and the air conditioner can simultaneously reduce the operation frequency of the compressor and increase the opening of the electronic expansion valve. If the difference between the indoor temperature and the set temperature is smaller than or equal to the preset threshold, the wind felt by the user is not obvious, namely, when the temperature of the coil pipe is smaller, the air conditioner can reduce the running frequency of the compressor or increase the opening of the electronic expansion valve.
In addition, if the coil temperature is high, the dehumidification amount may be reduced, and the air conditioner may increase the operation frequency of the compressor, decrease the opening degree of the electronic expansion valve, or increase the operation frequency of the compressor and decrease the opening degree of the electronic expansion valve to reduce the coil temperature, thereby increasing the dehumidification amount.
In the technical scheme provided by the embodiment, after the air conditioner controls the indoor fan to rotate reversely, the air conditioner obtains the coil temperature of the indoor heat exchanger, and adjusts at least one of the operation frequency of the compressor and the opening degree of the electronic expansion valve according to the coil temperature so as to improve the evaporation temperature and ensure the dehumidification capacity of the air conditioner.
Referring to fig. 4, fig. 4 is a third embodiment of a dehumidification control method of an air conditioner according to the present disclosure, and based on the second embodiment, the step S40 includes:
step S41, determining whether the coil temperature is in a target range, wherein a limit value of the target range is a first preset temperature and a target difference value, the target difference value is larger than the first preset temperature, and the target difference value is a difference value between the current indoor temperature and a preset value;
step S42, when the coil temperature is determined to be in the target range, the operation frequency of the compressor is reduced and/or the electronic expansion valve is increased.
In this embodiment, the air conditioner increases at least one of the opening degree of the electronic expansion valve and the operation frequency of the compressor according to the coil temperature. Specifically, the air conditioner stores a first preset temperature, and the air conditioner can determine a target difference value according to the current indoor temperature and the difference value of the preset value, so that a target range is determined according to the first preset temperature and the target difference value, the first preset temperature is smaller than the target difference value, and the limit value of the target range is the first preset temperature and the target difference value. The target range is [ T0, T4-A-2], wherein T0 is a first preset temperature, T4 is an indoor temperature, A+2 is a preset value, A is a temperature return difference of the set temperature, namely Te is more than 3 ℃ and less than T1-A-2, and the air conditioner increases the opening of the electronic expansion valve and reduces the running frequency of the compressor. The first preset temperature may be any value. For example, the first preset temperature may be 3 ℃. The preset value is A+2, and the value of A is generally 1-3. After the operation frequency of the compressor is reduced and the opening of the electronic expansion valve is increased, the coil temperature is acquired again, and if the coil temperature is still in the target range, the operation frequency of the compressor is continuously reduced and the opening of the electronic expansion valve is increased.
In the technical scheme provided by the embodiment, after the indoor fan is reversed, the air conditioner determines whether the coil temperature of the indoor heat exchanger is in a target range, if so, the opening of the electronic expansion valve is increased, and the operating frequency of the compressor is reduced so as to improve the temperature of the evaporator.
In one embodiment, after step S41, the method further includes:
when the temperature of the coil is smaller than a first preset temperature, the compressor is controlled to stop running, the indoor fan is controlled to rotate positively, and the angle of the air deflector is adjusted to enable the air conditioner to supply air upwards.
When the air conditioner dehumidifies, the indoor heat exchanger has the risk of frosting. The air conditioner needs to determine whether the coil temperature is less than a first preset temperature. The first preset temperature is the critical temperature of frosting of the indoor heat exchanger. The first preset temperature may be any value. For example, the first preset temperature may be 3 ℃, i.e. the indoor heat exchanger frosts when the air conditioner determines that the coil temperature Te is less than 3 ℃, and the air conditioner needs to defrost. At this time, the air conditioner controls the compressor to stop and controls the indoor fan to rotate forward so as to defrost the indoor heat exchanger. In addition, because the coil temperature of the indoor heat exchanger is lower, the temperature of the air blown out by the air conditioner is lower, and the air conditioner is used for upwards blowing air by adjusting the angle of the air deflector, so that the air blown out by the air conditioner is prevented from blowing to a user. It can be understood that when the coil temperature of the indoor heat exchanger is less than the first preset temperature, the air conditioner controls the compressor to stop running, controls the indoor fan to rotate forward, and adjusts the angle of the air deflector so that the air conditioner supplies air upwards.
Further, before defrosting, the operation frequency of the compressor is gradually decreased, and the opening degree of the electronic expansion valve is gradually increased. When the temperature of the coil is smaller than the first preset temperature, if the operating frequency of the compressor is not the minimum, the opening of the electronic expansion valve is not the maximum, and the air conditioner can increase the temperature of the coil by continuously reducing the operating frequency of the compressor, continuously increasing the opening of the electronic expansion valve or reducing the operating frequency of the compressor and increasing the opening of the electronic expansion valve, so that the frosting degree of the indoor heat exchanger is relieved. If the temperature of the coil is smaller than the first preset temperature, the operating frequency of the compressor is minimum, the opening of the electronic expansion valve is maximum, the air conditioner cannot continuously reduce the operating frequency and increase the temperature of the coil by increasing the electronic expansion valve, at the moment, defrosting of the indoor heat exchanger is required, the air conditioner controls the compressor to stop operating, controls the fan to rotate forwards, and adjusts the angle of the air deflector to enable the air conditioner to supply air upwards.
Further, after defrosting of the indoor heat exchanger is performed by adjusting the angle of the air deflector, the air conditioner continues to acquire the coil temperature of the indoor heat exchanger, and if the coil temperature is greater than a second preset temperature, the angle of the air deflector is controlled to be restored to the set angle, and the compressor is controlled to operate, so that dehumidification is continued. The second preset temperature is greater than or equal to the target difference. If the temperature of the coil is higher than the second preset temperature and the indoor humidity is still higher, controlling the angle of the air deflector to be restored to the set angle, controlling the compressor to operate, and continuing to operate the dehumidification mode so as to repeatedly execute the steps S10-S20. If the indoor humidity is lower, controlling the angle of the air deflector to return to the set angle, and exiting the dehumidification mode.
In the technical scheme provided by the embodiment, after the air conditioner controls the indoor fan to rotate reversely, the coil temperature of the indoor heat exchanger is obtained to determine whether the indoor heat exchanger frosts or not, and if yes, defrosting is performed.
Referring to fig. 5, fig. 5 is a schematic diagram showing a fourth embodiment of a dehumidification control method of an air conditioner according to the present disclosure, and after the step S20, further includes:
and step S70, controlling the operation of the electric auxiliary heating device.
In this embodiment, the air conditioner is provided with an electric auxiliary heating device. The electric auxiliary heating device is arranged in the air duct where the indoor heat exchanger is located. The air conditioner controls the indoor fan to rotate reversely, and the air conditioner starts the electric auxiliary heating device so as to improve the coil temperature of the indoor heat exchanger and the air outlet temperature. The electric auxiliary heating device has smaller running power, so that the lifting amplitude of the coil temperature of the indoor heat exchanger is smaller, and the dehumidification capacity of the air conditioner is ensured. When defrosting the indoor heat exchanger in the air conditioner, the power of the electric auxiliary heating device can be larger so as to quickly defrost the indoor heat exchanger. If the indoor temperature is greater than or equal to the set temperature in the dehumidification process of the air conditioner, the electric auxiliary heating device stops running.
In addition, when the air conditioner is provided with the electric auxiliary heating device, when the air conditioner dehumidifies, if the indoor temperature is lower, the air conditioner can rapidly raise the air outlet temperature after starting the electric auxiliary heating device, so that the indoor temperature triggering the inversion of the indoor fan can be slightly lower. That is, when the indoor temperature is smaller than the set temperature and the difference between the set temperature and the indoor temperature is larger than the preset difference, the indoor fan is controlled to rotate reversely, and the electric auxiliary heating device is controlled to operate. That is, T1 is less than Ts-A, the indoor fan is reversed, the operation of the electric auxiliary heating device is controlled, A is a preset difference value, A is a temperature return difference of a set temperature, and the value is generally 1-3. If the air conditioner does not have the electric auxiliary heating device or the dehumidification mode does not start the electric auxiliary heating device, T1 is smaller than Ts, and the indoor fan is controlled to rotate reversely.
In addition, the air conditioner can start the electric auxiliary heating device when entering the dehumidification mode so as to improve the air outlet temperature, and further, when the indoor temperature is obtained, if the indoor temperature is smaller than the set temperature, the indoor fan is controlled to rotate reversely.
In this embodiment, the air conditioner performs dehumidification, the indoor temperature is less than the set temperature, the air conditioner controls the indoor fan to rotate reversely, and controls the electric auxiliary heating device to operate, so that the cooling capacity of the refrigeration system is balanced.
In an embodiment, the air conditioner is not provided with the electric auxiliary heating device, or the air conditioner enters the dehumidification mode and the indoor temperature is lower than the set temperature, the air conditioner does not start the electric auxiliary heating device, and when the air conditioner reduces the operation frequency of the compressor, the operation frequency of the compressor is directly reduced to the minimum frequency. When the coil temperature of the indoor heat exchanger needs to be continuously increased subsequently, only the opening degree of the electronic expansion valve is increased. In addition, when the operation frequency of the compressor is reduced to the minimum frequency, the indoor fan is reversed according to the maximum rotation speed, so that the dehumidification amount lost when the operation frequency is reduced to the minimum frequency is compensated.
The air conditioner comprises an air conditioner provided with an electric auxiliary heating device and an air conditioner without the electric auxiliary heating device. The brief flow of cold air prevention and dehumidification of the air conditioner without the electric auxiliary heating device and without starting the electric auxiliary heating device in the dehumidification mode is as follows:
A. after entering a dehumidification mode, the air conditioner operates according to set operation parameters, and acquires indoor temperature and set temperature;
B. when the indoor temperature is smaller than the set temperature, controlling the indoor fan to rotate reversely according to the maximum rotation speed, and if the indoor temperature is larger than or equal to the set temperature, maintaining the current operation parameters unchanged;
C. the operation frequency of the compressor is operated according to the minimum frequency, and the opening degree of the electronic expansion valve is increased;
D. acquiring the coil temperature Te of the indoor heat exchanger, and returning to the indoor temperature acquired in the step A when the coil temperature satisfies the condition that Te is more than 3 ℃ and less than T1-A-2;
E. when the temperature Te of the coil pipe is less than or equal to 3 ℃ and the opening of the electronic expansion valve is the largest, stopping the compressor, rotating the indoor fan forward, controlling the angle of the air deflector upwards, and defrosting the indoor heat exchanger;
F. and when the temperature Te of the coil pipe is greater than or equal to T1-A-2, the indoor fan rotates positively and returns to the set rotating speed, the opening of the electronic expansion valve returns to the set opening, the compressor is started, and the air enters A again.
The brief flow of cold air prevention and dehumidification of the air conditioner without starting the electric auxiliary heating in the dehumidification mode is as follows:
a. after entering a dehumidification mode, the air conditioner operates according to set operation parameters, and acquires indoor temperature and set temperature;
b. when the indoor temperature is smaller than the set temperature and the difference value between the set temperature and the indoor temperature is larger than a preset threshold value (T1 is smaller than or equal to Ts-A), controlling the indoor fan to rotate reversely, and if the indoor temperature is larger than or equal to the set temperature, maintaining the current operation parameters unchanged;
c. starting the electric auxiliary heating device, reducing the operation frequency of the compressor and increasing at least one of the opening degrees of the electronic expansion valve;
d. acquiring the coil temperature Te of the indoor heat exchanger, and returning to the indoor temperature acquired in the step A when the coil temperature satisfies the condition that Te is more than 3 ℃ and less than T1-A-2;
e. when the temperature Te of the coil pipe is less than or equal to 3 ℃, the running frequency of the compressor is minimum, the opening of the electronic expansion valve is maximum, the compressor is stopped, the indoor fan rotates positively (can rotate positively according to the maximum rotating speed), and the angle of the air deflector is controlled to be upwards, so that defrosting of the indoor heat exchanger is performed;
f. when the temperature Te of the coil pipe is greater than or equal to T1-A-2, the electric auxiliary heating device is closed, the opening of the electronic expansion valve is restored to the set opening, the compressor is started, and the electric auxiliary heating device enters A again.
The invention also provides an air conditioner which comprises a memory, a processor and a control program stored in the memory and capable of running on the processor, wherein the control program realizes the steps of the dehumidification control method of the air conditioner according to the embodiment when being executed by the processor.
The present invention also provides a computer-readable storage medium storing a control program which, when executed by a processor, implements the steps of the dehumidification control method of an air conditioner as described above.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air-conditioning device, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description of the preferred embodiments of the present invention should not be taken as limiting the scope of the invention, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the following description and drawings.
Claims (8)
1. The dehumidification control method of the air conditioner is characterized by comprising the following steps of:
acquiring the current indoor temperature after the air conditioner operates in a dehumidification mode, wherein when the air conditioner operates in the dehumidification mode, an indoor fan of the air conditioner rotates forward to supply air to the indoor;
when the current indoor temperature is smaller than the set temperature, controlling the indoor fan to reversely rotate;
acquiring the coil temperature of an indoor heat exchanger;
according to the coil temperature of the indoor heat exchanger, adjusting the running frequency of a compressor and/or the opening of an electronic expansion valve;
the step of adjusting the operation frequency of the compressor and/or adjusting the opening degree of the electronic expansion valve according to the coil temperature of the indoor heat exchanger comprises the following steps:
determining whether the coil temperature is in a target range, wherein a limit value of the target range is a first preset temperature and a target difference value, the target difference value is larger than the first preset temperature, and the target difference value is a difference value between the current indoor temperature and a preset value; the first preset temperature is the critical temperature of frosting of the indoor heat exchanger, and the preset value is determined according to the temperature return difference of the set temperature;
and when the coil temperature is determined to be in the target range, reducing the operating frequency of the compressor and/or increasing the opening degree of the electronic expansion valve.
2. The method of controlling dehumidification of an air conditioner as set forth in claim 1, wherein the step of determining whether the coil temperature is within a target range further includes:
when the temperature of the coil is smaller than a first preset temperature, the compressor is controlled to stop running, the indoor fan is controlled to rotate positively, and the angle of the air deflector is adjusted to enable the air conditioner to supply air upwards.
3. The method of controlling dehumidification of an air conditioner as set forth in claim 2, wherein after the step of adjusting an angle of the air guide plate to cause the air conditioner to supply air upward, further comprising:
and when the temperature of the coil pipe is higher than a second preset temperature, controlling the angle of the air deflector to be restored to a set angle, and controlling the compressor to run, wherein the second preset temperature is higher than or equal to the target difference value.
4. The dehumidification control method of an air conditioner as set forth in claim 1, wherein the step of reducing the operation frequency of the compressor includes:
and controlling the compressor to run according to the minimum running frequency, wherein the indoor fan reverses according to the maximum rotating speed.
5. The dehumidification control method of an air conditioner according to claim 1, wherein the air conditioner is provided with an electric auxiliary heating device, and the step of obtaining the current indoor temperature after the air conditioner operates in the dehumidification mode comprises:
after the air conditioner enters a dehumidification mode, the electric auxiliary heating device is started;
the current indoor temperature is obtained.
6. The dehumidification control method of an air conditioner according to any one of claims 1 to 3, wherein the air conditioner is provided with an electric auxiliary heating device, and the step of controlling the indoor fan to reverse after the step of controlling the indoor fan to reverse when the current indoor temperature is less than a set temperature further comprises:
and controlling the electric auxiliary heating device to operate.
7. An air conditioner characterized by further comprising a memory, a processor, and a control program stored in the memory and executable on the processor, which when executed by the processor, realizes the respective steps of the dehumidification control method of an air conditioner according to any one of claims 1 to 6.
8. A computer-readable storage medium storing a control program which, when executed by a processor, implements the respective steps of the dehumidification control method of an air conditioner according to any one of claims 1 to 6.
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| JP2001336808A (en) * | 2000-05-29 | 2001-12-07 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN102466298A (en) * | 2010-11-15 | 2012-05-23 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
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